Ballpoint pen



1. Ballpoint pen

1.1 is a top perspective view of a ballpoint pen showing my new design;

1.2 is a bottom perspective view thereof;

1.3 is a front elevational view thereof;

1.4 is a rear elevational view thereof;

1.5 is a side elevational view thereof;

1.6 is an enlarged top plan view thereof; and

1.7 is an enlarged bottom plan view thereof. 

CLAIM The ornamental design for a ballpoint pen, as shown and described. 